Pipe lining machine



F. M. MATHENY PIPE LININGMACHINE I June 17, 1958 Q Sheets-Sheet 1 Filed Oct. 24, 1955 FIG. I.

4a 46 I? 75 7| I5 FIG. 2

I l2 I7 26 25 44 45 47 3O 5| 62 5253 6| s3 s3 8ll 65 63 INVENTOR FRANCIS M. MATHENY ATTORNEYS June 17, 1958 MATHENY 2,839,026

PIPE LINING MACHINE 2 Sheets-Sheet 2 Filed 001;. 24, 1955 INVENTOR FRANCIS M. MATHENY ATTORNEYS 2,839,026 Patented June 17, 1958 PIPE LINING MACHINE Francis M. Matheny, Lynwood, Calif., assignor to Pipe Linings, Inc., a corporation of Delaware Application October 24, 1955, Serial No. 542,220

8 Claims. (Cl. 118-606) This invention has to do with machines for lining pipe or other conduits with cement mortar.

A common method of lining pipe lines in place with cement mortar is by using a machine having a rotating dispensing head which throws or flings the mortar outwardly against the inner surface of the pipe as the ma chine is progressively moved through the pipe. Lining machines of this type with which I am familiar are not suitable for use in lining pipe of small diameter, by which I mean pipe having an inner diameter of 16 inches or less. This is due to the fact that the construction of such machines is such that if built on a small-enough scale to be passed through the pipe with clearance, the mortar feed passage, which ordinarily passes through a hollow motor shaft, would be so small that only an inadequate'supply of mortar could be furnished to the dispensing head.

An object of my invention is to provide a novel pipe lining machine of the type having a rotating dispensing head for flinging mortar outwardly against the pipe Wall which is particularly suitable for use in pipes of small diameter, such as pipes having an internal diameter of 16 inches or less, down to about four inches. 1

A further object is to provide a novel machine of the type indicated which includes a novel feed hopper and feed tube construction.

Another object is to provide a conduit-lining machine having novel means for agitating the mortar in the hopper portion of the machine.

A further object of the invention is to provide a machine of the type indicated which may be readily assembled or disassembled and in particular one in which guide members are detachably mounted upon a motor-casing unit and in which the hopper and dispensing head are detachably secured to the motor-casing unit.

These and other objects will be apparent from the drawings and the following description.

Referring to the drawings, which are for illustrative purposes only:

Fig. 1 is a side elevational view of a machine embodying the invention;

Fig. 2 is a longitudinal sectional view in the plane of line 2-2 of Fig. 3, with parts in elevation;

Fig. 3 is a sectional view on line 3-3 of Fig. 2;

Fig. 4 is a sectional view on line 55 of Fig. 2; and

Fig. 5 is a fragmentary sectional view on line 5-5 of Fig. 3.

More particularly describing the invention, numeral 11 generally indicates a motor-casing unit, the casing being designated 12. Mounted at one end of this is a hopper body generally designated 14 and a dispenser head 15. On the member 11 is a pair of centering guide members indicated by 16 and 17.

The casing 12 may be assumed to house an air or an electric motor and the casing is provided at one end with a tubular extension through which may pass an air hose or electric cable, as the case may be. Also, the extension 20 may serve as a means to attach a towline circumferentially spaced screws 31.

for the purpose of pulling the device through a pipe line or conduit. Casing 12 is preferably cylindrical and for the purpose of centering it in the pipe I provide the guides 16 and 17. Guide 16 consists of an annular body 22 having an internal flange 23 which is detachably secured to the casing 12, as by screws 24. Member 17 includes a body 25 which has several set screws 26' for detachably securing it in place.

Each body is provided with a plurality of inclined circumferentially spaced bores 27 (Fig. 5), each of which receives a guide rod 28. The latter is in each case anchored by means of a set screw 29.

At the end of the motor casing opposite to the end having the extension 20, I provide an adapter plate 30 which may be secured to the motor by means of'several This member is centrally apertured at 33 to receive a drive shaft 34 projecting from the motor and rotatably driven thereby. A resilient seal ring37 is provided about the shaft exteriorly of the reduced portion 12 of the casing and outwardly of this the shaft has a conoidal section 38. Beyond the latter is a cylindrical shaft section 40, interrupted near the end of the shaft by a groove 41. Fitted over the adapter plate and the adjacent end of the motor casing 12 is the hopper body 14 which has a cylindrical skirt portion .4 receiving the motor casing and peripheral surface 45 of plate 30. Beyond surface 45 member 30 has a face 46 of reduced size and with a groove 47 therein to receive. an O-ring or other suitable seal ring 48. The inner surface of the body 14 is stepped at 49 so that it corresponds with the two diameters presented by the faces 45 and 46 of member 30.

The hopper body cooperates with plate 30 to define a mortar chamber 51 surrounding the shaft. The outer end of the hopper body is in the form of a tubular extension 52 having slots 53. The dispensing head 15 is carried on the outer end of the shaft 40 being keyed thereto at 55. The dispensing head includes a mounting flange 56 having a screw 57 for locating it axially of the shaft, the screw seating in the groove 41. The head further includes end plates 61 and 62, vanes 63 and inserts 64- between the end plates, and an insert retainer ring 65. The head is conventional and need not be described in greater detail.

Mounted on shaft 40 is an agitator member which comprises a sleeve 71 which is keyed to the flange 56 by a projection 72 received in a notch 73 in the end of flange 56. The sleeve carries a pair of integral rods 75 which extend in a radial plane with respect to the sleeve and are adapted to rotate within the mortar chamber 51.

The mortar chamber 51 is fed with mortar through suitable conduits and for this purpose I provide a pair of tubular inlet members indicated by 78 which extend generally axially of the motor casing and are disposed adjacent the periphery thereof. These members provide the passages 79 for mortar to reach the mortar chamber, and in this connection, the adapter plate 3% is notched at 81 at two places to form part of the passages 79.

It is contemplated that each tubular inlet member '78 will have a mortar supply hose attached to it by suitable means, or that the tubular members 78 could be joined by a Y section at a suitable point clear of the motor unit and be fed by one main hose or conduit. The mortar may be pumped under pressure from a remote source through the hose or hoses to the mortar chamber. To accommodate the hose or hoses and permit each to pass closely adjacent the periphery of the mortar casing unit 11, I provide a pair of recesses 83 in the rings 16 and 17, and these are aligned with the tubular inlet members 78, respectively.

In the operation of the device, it is assumed a suitable towline is attached to the device for pulling the same in a direction such that the dispensing head 15 is at the trailing end of the machine. Mortar is fed under pressure to the mortar chamber where it is kept fluid by the rotation of the agitator rods 75. The mortar flows out through the slots 53 and is flung outwardly by the rotating dispensing head.

It will be apparent that the construction provides a device with a minimum over-all diameter and yet one which by reason of having two or more mortar inlet passages can receive suflicient mortar for the performance of the lining operation.

Although I have illustrated and described a preferred form of my invention, I contemplate that various changes and modifications can be made therein without departing from the invention, the scope of which is indicated by the following claims.

I claim:

1. A conduit-lining machine, comprising a motor having a casing, an adapter member mounted at one end of said motor casing, a hopper body mounted on the motor casing and providing a mortar chamber axially beyond said adapter member, a drive shaft projecting from the motor through said adapter member and extending through said mortar chamber, a mortar dispensing head carried by the outer end of said shaft, said hopper body having an apertured tubular extension within said dispensing head, and means providing a mortar inlet means communicating with said chamber.

2. A conduit-lining machine as set forth in claim 1 in which said mortar inlet means includes a tube at the periphery of the mortar chamber projecting generally axially adjacent the motor casing.

3. A conduit-lining machine, comprising a motor having a casing, an adapter member mounted at one end of said motor casing, a hopper body mounted on the motor casing and providing a mortar chamber axially beyond said adapter member, a drive shaft projecting from the motor through said adapter member and extending through said mortar chamber, a mortar dispensing head carried by the outer end of said shaft, said hopper body having an apertured tubular extension within said dispensing head, means providing a mortar inlet tube communicating with said chamber, and a mortar agitator means mounted on said shaft within said mortar chamber.

4. A conduit-lining machine as set forth in claim 3 in which said agitator means comprises at least one laterally projecting rod carried by said shaft for rotation therewith.

5. A conduit-lining machine as set forth in claim 3 in 4 l which said agitator means comprises a sleeve mounted on said shaft for rotation therewith and a rod on the sleeve and projecting laterally thereof.

6. A conduit-lining machine, comprising a motor having a cylindrical casing, an adapter member mounted at one end of said motor casing, a drive shaft projecting axially from the motor through said adapter member, a hopper body adapted to fit over said adapter plate and the adjacent end of said motor casing, said hopper body cooperating with said plate to form a mortar chamber around said drive shaft, said hopper body including an apertured extension, a dispensing head mounted at the end of said drive shaft and extending toward said motor and surrounding said extension, said hopper body being provided with a tubular inlet means at its periphery including an axially projecting tubular portion at the periphery of the motor casing, and an agitator on said drive shaft, said agitator including a sleeve fixed tothe drive shaft and one or more laterally projecting rods thereon in said mortar chamber.

7. A conduit-lining machine, comprising a motor having a casing, a hopper body mounted on the motor casing and projecting axially beyond one end of said casing providing a mortar chamber, a drive shaft projecting from the motor through said mortar chamber, a mortar dispensing head carried by the outer end of said shaft, said hopper body having an apertured tubular extension within said dispensing head, and means providing a mortar inlet means communicating with said chamber, said motor, said hopper body and said head being in axial alignment.

8. A conduit-lining machine, comprising a motor having a casing and including a shaft projecting beyond one end of the casing, a hopper body mounted on said casing and providing a mortar chamber around the projecting portion of said shaft, means providing a mortar inlet communicating with said chamber, a mortar dispensing head carried on the outer end of said shaft, and means providing communication from said chamber to said head, said motor, said hopper body and said head beingin axial alignment.

References Cited in the file of this patent UNITED STATES PATENTS 2,185,570 Ridley Jan. 2, 1940 2,262,647 Perkins Nov. 11, 1941 2,326,823 Brend Aug. 17, 1943 2,353,951 Wood et al. July 18, 1944 2,428,292 Queen Sept. 30, 1947 

